[Bug 110617] [KBL] Video corrupted during playback with audio in KBL NUC using Clear Linux OS (Root Caused to GuC/HuC Firmware Authentication Issue)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110617

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
For reference,

commit f774f09649192f326fa030564afd3f8f5d82c1e4 (drm-intel/for-linux-next,
drm-intel/drm-intel-next-queued, drm-intel-next-queued)
Author: Michal Wajdeczko <michal.wajdeczko at intel.com>
Date:   Fri Jul 12 11:14:45 2019 +0000

    drm/i915/guc: Turn on GuC/HuC auto mode

    Using "enable_guc" modparam auto mode (-1) will let driver
    decide on which platforms and in which configuration we want
    to use GuC/HuC firmwares.

    Today driver will enable HuC firmware authentication by GuC
    only on Gen11+ platforms as HuC firmware is required to unlock
    advanced video codecs in media driver.

    Legacy platforms with GuC/HuC are not affected by this change
    as for them driver still defaults to disabled(0) in auto mode.

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